you just contradicted yourself. You just finished saying an aro will not eat something that will kill it...now you say they dont...so which one is it? Does an arowana really know if an insect will kill them or not? I highly doubt it, if they did they would be able to pick healthy feeders from unhealthy feeders, you can probably drop rat poison in the tank and they'll think its pellets. Why do they only eat insects? becuase thats mostly what there is. I KNOW how smart they are, smart enough to know when they're going to get fed, and smart enough to start splashing when they get hungry, but not smart enough to know if something is going to kill them when they eat it. Yes arowanas need variety, but neither do I feed crickets as part of a varied diet when theres so many better things i COULD feed. Crickets themselves really do have NO value at all, all its value comes from what we gutload them with, so really, whats the point of feeding it. Only reason TO feed crickets is for aros that wont eat anything else, its like telling me blackworms are really nutritious for rays, they're not, we just use them for sick rays that wont eat. Get my drift yet?